The Texas rules cover network interconnection; however, there has been limited experience with using these rules for network interconnection.
The Public Utility Commission of Texas Interconnection Manual provides screens for interconnection into secondary networks.
These screens cover:
Size of DG
Relative to the feeder load
Relative to the customer’s load
If the application passes these screens, the application is approved and there is no study fee.
If the application fails any of the screens, the applicant is charged for a study and the utility will make a recommendation to the applicant on how to proceed.
The utility can always perform a study, but not always charge the customer. Regardless of who pays for the study, the utility may reject an application for safety or reliability issues.
Since the standard has been in place, there has been little activity regarding network interconnection using these rules.
Approaches from Other States and Jurisdictions Texas-Overview